I've seen that video before. That's how I learned about the system saver. I know how it works and what it's supposed to do.
The system saver is installed on the inlet side of the pump (FPR1). So how can the system saver stops debris from getting into the fuel system if it is installed on the inlet side of the pump before the high pressure pistons? The high pressure outlet side / pistons is what fails, which is pasted the system saver, sending the debris into the fuel system.